/**
  * @param \_OurBrand_\Quiz\Domain\Model\Exercises\SpellingAndGrammarCommaQuestion $question
  */
 public function addQuestion($question)
 {
     $question->setExercise($this);
     $question->setNumber(count($this->questions));
     $this->questions->add($question);
     $this->maxScore = count($this->questions);
 }
 public function testGetNumber()
 {
     $sng = new SpellingAndGrammarCommaQuestion();
     $number = 1;
     $this->assertNull($sng->setNumber($number));
     $this->assertSame($number, $sng->getNumber());
 }